Saudi Arabia's April Supply Cuts: A Flow-Driven Price Shock

The market is reacting to a severe physical supply shock. Saudi Arabia's crude exports have collapsed from 7.108 million bpd in February to just 4.355 million bpd so far in March. This isn't a minor blip; it's a dramatic, two-month consecutive cut in supply to Asia, signaling a sustained disruption.

The core of the problem is Aramco's drastic rationing. The company is now supplying only Arab Light crude exported from the Red Sea port of Yanbu to Asian buyers. This move forces Asian refiners to accept a single, lighter grade, capping their refined products output and creating a direct feedstock mismatch.

This flow disruption is the immediate driver of market pricing. The sheer scale of the export drop, combined with the logistical constraints of rerouting via Yanbu, has tightened physical market conditions. The market is pricing this as a major shock, with the physical shortage now a key factor behind recent price action.

Price Action: The Flow Premium in Real Time

The physical flow shock is now the dominant price driver, overriding all other market mechanics. Brent crude has surged roughly 50% since the Iran war began, briefly topping $119. This isn't a speculative rally; it's the market pricing in actual, sustained supply destruction as tankers remain stranded and production halts.

Goldman Sachs' revised forecast crystallizes this flow premium. The bank now expects Brent to average $71 in Q4 2026, a 36% gain from pre-war levels. This projection hinges entirely on the prolonged disruption to the Strait of Hormuz, which Goldman now models as a 21-day period of severely depressed flows. The market is pricing this as the largest-ever oil shock, with prices ignoring a 400 million barrel IEA reserve release.

The bottom line is that physical constraints are winning. Despite emergency inventory measures, plunging tanker traffic outweighs emergency inventory measures. The market's focus has shifted from geopolitical rhetoric to the tangible reality of reduced flows, a dynamic that will dictate price action until physical supply conditions normalize.

The Liquidity Trap and Forward Scenarios

The cuts are a direct result of a physical bottleneck. Saudi Arabia's East-West pipeline and Yanbu terminal have limited pipeline and terminal capacity, forcing Aramco to ration supply. This isn't a choice; it's a constraint that has created a feedstock mismatch for Asian refiners, who now must process only Arab Light crude. The structural trap is clear: the market's attempt to reroute flows has hit a hard capacity wall.

The key catalyst for any price moderation is the Strait of Hormuz. President Trump's ultimatum urging Iran to reopen the waterway and Iran's threats to retaliate keep the market on edge. Goldman Sachs' base case hinges on this reopening, assuming flows start recovering March 21 onwards. The bank's model shows a 21-day period of depressed flows followed by a 30-day recovery, a timeline that will dictate the next major price move.

The market's forward view is tied to this timeline. Goldman expects WTI prices to moderate to the low $70s by early June, but only if the recovery is swift. This projection assumes a logistical limit on emergency reserve releases, with the full 400 million barrel IEA drawdown phasing out through that period. The setup is a race between the physical flow shock and the policy response.